<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>下拉框</title>
	</head>
	<body>
		<form>
			
			密码:<input type="text" placeholder="请输入密码" required/>
			<select>
				<option>好adwd</option>
				<option selected="selected">好ddd</option>
				<option>好</option>
				<option>好</option>
			</select>

			搜索:<input type="search" />
			数字:<input type="number" max="100" min="10" step="2" />
			<input type="range" />
			<input type="submit" />

		</form>
		<input type="checkbox" checked id="ck">
		<input type="checkbox"  id="ck">
		<input type="checkbox"  id="ck">
		
		
		
		
	</body>
</html>
